There are some users who are having problems in running Skype in Windows 7 operating system. One of most common issue is Skype crashes on Start-up or a few seconds after logging in. Below are few suggestions on how to possibly resolve such problems (as gathered from sources such as the Skype website and actual Skype users as well). 1. Disable Compatibility Mode - Right-click on the Skype Icon - Select Properties - Select the Compatibility tab - make sure that Run This Program In Compatibility Mode For: is not checked. - Then click the OK button 2. Delete Shared.XML file - Quit/Close Skype - Open the Run Command - Type or paste %appdata%\skype, then click OK. - Then Look for and delete file named Shared.XML 3. Update your Device Drivers/Software which may include audio drivers, webcam driver, video/display driver - you can just type Update Device Drivers in the search box to find and open the Device Manager window. I will try to post additional suggestions from time to time, and please also feel free to share your ideas and other solutions.